Improved artificial fuel



UNITED STATES PATENT OFFIcE.

THOMAS M. FELL, OF BROOKLYN, NEW YORK.

IMPROVED ARTIFICIAL FUEL.

- Specification forming part of Letters Patent-No. 40,920. datedDecember 15,1863; antcdated December 4, 1863.

To all whom it may concern:

Be it known that I, THOMAS M. FELL, a subject of the Kingdom of GreatBritain, but now residing in the city of Brooklyn, in the county ot'Kings and State of New York, have invented a certain new and usefulimproved manufacture of artificial fuel from the dust and breeze orrefuse of anthracite coal; and I do hereby declare that the following isa full and correct description thereof and the mode of manufacture.

I'take the fine dust and small particles of anthracite coal, the refuseof the coal-yards, and mix with it from five to ten per cent, in\veight,of asphaltnm, finelypowdered anddr' Thereis generally sufficientmoisture in thecoaldust to make the mixture sufficiently plastic tomold; if not, water must he added, but not in sufficient quantity tomake apaste. The plastic compound is next pressed in molds or frames ofany suitable or convenient shape, and then placed in an oven or mufifleheated by a fire underneath the bottom, the products of combustionpassing through the oven, over the material, and out at any suitableflue connected with a chimney. The oven door is closed during theoperation, but not necessarily luted. As such ovens are in common usefor various purposes, a more particular deseri ption is not necessary.The temperature should be from 300? to 600 Fahrenheit,depending upon theproportion of asphaltum. The material should he kept in the oven untilit becomes solid and dry, when it is taken out and cooled down in theopen air. The fuel is now ready for use, and may be broken up insuitable sizes for grates, furnaces, 85c.

I sometimes reduce the anthracite to a uniform condition before mixingby grinding or pounding. When this is done the fuel is more dense andmakes a hotter fire.

I claim- The within-described artificial fuel, manufactured fromanthracite and asphaltnm in the manner described.

TllOS. K. FELL.

\Vitnesses F. O. TREADWELL, Jr., M. B. ANUS.

